Anderson prisms???

[Merlin66]

Where can you find Anderson Prisms???
A google search came up with nothing????

[coldlegs]

Ken
You need some practice in googling!! Found these in two minutes.


http://jimshomeplanet.com/SHS/protoshs.html
http://www.eyes-on-the-skies.org/shs/westland.htm
http://www.spectrohelioscope.org/net/new_page_2.htm
http://adsabs.harvard.edu/full/1939PASP...51...95P
http://www.eyes-on-the-skies.org/shs/SHS.html
http://books.google.com.au/books?id=nsJ41-tTj0YC&pg=PA107&lpg=PA107&dq=%22anderson+prism%22&source=bl&ots=scYS_HVc-O&sig=0bzM7Woo5EAYDFg8MqAK7-WmuH0&hl=en&sa=X&ei=ief4T6uWB4OuiAejiZHwBg&ved=0CFMQ6AEwAw#v=onepage&q=%22anderson%20prism%22&f=false
http://www.spectrohelioscope.org/net/spectroheliograph.pdf
http://scopes.wikispaces.com/wiki/changes
http://translate.google.com.au/translate?hl=en&sl=it&u=http://www.pno-astronomy.com/Spettroscopia/Applicazioni/Spettroscopia%2520solare/Spettroscopia%2520solare.htm&prev=/search%3Fq%3D%2522anderson%2Bprism% 2522%2Bsun%26start%3D10%26hl%3Den%2 6sa%3DN%26biw%3D1266%26bih%3D603%26 prmd%3Dimvnsb&sa=X&ei=jej4T87BHsadiAf86_TRBg&ved=0CF0Q7gEwCTgK

Cheers
Stephen

[Merlin66]

Stephen,
Maybe I should have been clearer....I'm looking for a supplier...
I'm already familiar with what an Anderson prism does in a Spectroshelioscope.
There does not seem to be anyone who makes and sells them....

[coldlegs]

Ahhh! That's a different kettle of fish. I suspect there aren't any and they are
all either designed in house (govs/unis etc) for specific projects or amateur
DIY stuff as there would not be much profit selling to the public. I haven't seen
any on the hundreds of astro sites I've been to.
Good luck Ken
Cheers
Stephen

[anj026]

This UK vendor (http://www.irpoyser.co.uk/irpoysercatalogue6.php) might have something?

[Merlin66]

Andy,
tried them, and a few others....no success.
It's such a unique application I think they have to be individually made...

[Poita]

Have you thought about making your own, I've read about success using Norland 61 to cement two diagonal prisms.
I'll try and dig out a reference.

[Poita]

Found it.

http://www.eyes-on-the-skies.org/shs/westland.htm

[Merlin66]

Peter,
I have that reference (among many!).....something like that would be a "plan B" solution.

[Poita]

It looked like the only option when I started looking to do the same.

BTW, I found a new favourite word when looking for them:

spectroheliokinematograph

[Merlin66]

I'm starting to think the "Young" nodding mirror solution may be the way to go......

[Poita]

Maybe these guys would be worth a go?
http://jerryychan.en.made-in-china.com/product/zeDERXUdXBkp/China-Quartz-Prism.html

I've received mirrors and prisms in the past by contacting manufacturers directly and they ended up sending me a sample, even though their minimum order qty was in the thousands, sometimes the sample did the job :D

[Merlin66]

Hmmm
You've been lucker than me. I've sent previous enquiries for prisms (60 degree), gratings and mirrors with no success.

[Poita]

I *ahem* usually forward a letter that details a practical application that may end up leading to thousands of units...

These are probably not of the quality required, but they may be able to get them?
http://www.glass-sphere.com/en/eshop/sklenene-kostky-sklenene-hranoly.html

or these:
http://www.alibaba.com/Prisms_pid15370707

and for those wondering what a nodding mirror is:
http://spectrohelioscope.org/Higgins/SHS02.htm

[OICURMT]

Ken:

Noticed a link (http://www.iceinspace.com.au/forum/showthread.php?t=93615) in this thread...

http://www.longmanoptical.com.au/page/products.html#prisms

You may be able to get Longman to assemble one for you...

OIC!